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traceoptions (DNS, Port, and TFTP Packet Forwarding)

date_range 20-Nov-23

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Syntax

traceoptions {
    file filename  <files number> <match regular-expression> <size bytes> <world-readable | no-world-readable>;
    flag flag;
    level level;
    <no-remote-trace>;
}

Hierarchy Level

[edit forwarding-options helpers]

Description

Configure tracing operations for BOOTP, DNS, TFTP, or custom UDP port packet forwarding.

Default

If you do not include this statement, no tracing operations are performed.

Options

file filename—Name of the file to receive the output of the tracing operation. Enclose the name in quotation marks (" "). All files are placed in a file named fud in the directory /var/log. If you include the file statement, you must specify a filename.

files number—(Optional) Maximum number of trace files. When a trace file named trace-file reaches its maximum size, it is renamed trace-file.0, then trace-file.1, and so on, until the maximum number of trace files is reached. Then the oldest trace file is overwritten.

If you specify a maximum number of files, you also must specify a maximum file size with the size option and a filename.

Range: 2 through 1000

Default: 3 files

flag flag—Tracing operation to perform. To specify more than one tracing operation, include multiple flag statements. You can include the following flags:

address—Trace address management events
all—Trace all events
bootp—Trace BOOTP or DHCP services events
config—Trace configuration events
domain—Trace DNS service events
ifdb—Trace interface database operations
io—Trace I/O operations
main—Trace main loop events
port—Trace arbitrary protocol events
rtsock—Trace routing socket operations
tftp—Trace TFTP service events
trace—Trace tracing operations
ui—Trace user interface operations
util—Trace miscellaneous utility operations

match regular-expression—(Optional) Refine the output to include lines that contain the regular expression.

no-remote-trace—(Optional) Disable remote tracing globally or for a specific tracing operation.

no-world-readable—(Optional) Restrict file access to the owner.

size size—(Optional) Maximum size of each trace file, in kilobytes (KB), megabytes (MB), or gigabytes (GB). When a trace file named trace-file reaches this size, it is renamed trace-file.0. When the trace-file file again reaches its maximum size, trace-file.0 is renamed trace-file.1 and trace-file is renamed trace-file.0. This renaming scheme continues until the maximum number of trace files is reached. Then the oldest trace file is overwritten.

If you specify a maximum file size, you also must specify a maximum number of trace files with the files option and filename.

Syntax: xk to specify KB, xm to specify MB, or xg to specify GB

Range: 0 bytes through 4,294,967,295 KB

Default: 128 KB

world-readable—(Optional) Enable unrestricted file access.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced before Junos OS Release 7.4.

Statement standardized and match option introduced in Junos OS Release 8.0.

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traceoptions (DNS, Port, and TFTP Packet Forwarding)

Syntax

Hierarchy Level

Description

Default

Options

Required Privilege Level

Release Information

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Junos CLI Reference

ON THIS PAGE

traceoptions (DNS, Port, and TFTP Packet Forwarding)

Syntax

Hierarchy Level

Description

Default

Options

Required Privilege Level

Release Information

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